---

2.5.4 Configuration errors

All errors in functions in the (lepton config) are reported using one of two keys:

1. File errors (e.g. “Access denied” or “File not found” are indicated with the system-error key.
2. All other errors are indicated using the config-error key.

When a config-error is signalled, data part of the error arguments is a list containing one of the following symbols:

unknown-encoding

The text being parsed was in an unknown encoding.

parse

The configuration data wass ill-formed.

key-not-found

A requested configuration key was not found.

group-not-found

A requested configuration group was not found.

invalid-value

A configuration value could not be parsed into the requested format.